Remove tag from subscriber

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare destructiveHint=true and idempotentHint=false, so the safety profile is covered structurally. The description's second sentence restates a generic destructive-action warning ("delivery, audience membership, published data or irreversible state") that is boilerplate rather than specific to untagging, and the confirm requirement it highlights is already documented in the schema's confirm property.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Two short sentences with no filler, and the action plus its precondition are front-loaded. The second sentence is somewhat generic but does not bloat the definition.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple two-required-parameter mutation with full schema coverage and annotations carrying the destructive/idempotency profile, the description is nearly complete. It lacks sibling disambiguation (by-id vs by-email) but needs no return-value explanation since there is no output schema.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so subscriber_id, tag_id, account and confirm are all documented in the schema itself. The description adds only the confirm=true requirement, which duplicates the confirm parameter's own description, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb+resource ("Remove tag from subscriber") that an agent can map directly to an action. However, it does not distinguish itself from the near-identical sibling untag_subscriber_by_email or bulk_remove_tags_from_subscribers, leaving the agent to infer the by-id scope from the name alone.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

"Requires confirm=true" is a useful precondition, but there is no explicit when-to-use guidance and no mention of the obvious alternatives (untag_subscriber_by_email for email addressing, bulk_remove_tags_from_subscribers for multi-target removals). Usage must be inferred from the tool name.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.